LED FAQs

Troubleshooting Q&A

Q1: The Amazon Confirmed Fit system says the bulb fits, but I can't install it. What should I do?
A: You may have purchased an incorrect model. Please contact PERPOTAO customer service to confirm the correct model.
(Note: Amazon Confirmed Fit system is not 100% accurate.)

Q2: After replacing the bulb, I can't switch between high beam and low beam. What's wrong?
A: The high beam and low beam power wires may be connected incorrectly. Please switch to the correct power cord.

Q3: My headlights won't turn on or off. What could be the cause?
A: It could be a defective bulb or adaptability issue.

  • For D1S/D3S models: Change the adaptation mode.

  • For D2S/D4S models: Contact PERPOTAO customer service.

Q4: The high beam and low beam functions are reversed. How can I fix this?
A: This is likely due to incorrect bulb installation direction. Please reinstall the bulb correctly.

Q5: My headlights keep flashing. What should I check?
A: This issue may be caused by a decoder problem or a ballast problem.

Q6: The headlights don't work after installation. What should I do?
A: Check and replace the fuse if necessary. The package includes two replacement fuses.

Q7: The headlights stop working after some time. What's happening?
A: The LED driver may be overheating and triggering the chip's self-protection shut-off. Please contact PERPOTAO customer service to replace the bulb.

Q8: There's radio interference after installation. How can I solve it?
A: This is likely due to a quality issue. Please contact PERPOTAO customer service for assistance.

Q9: I can't install the bulb. Is there any help?
A: You can scan the QR code provided in the package to access the installation video for guidance.

Q10: The adaptive headlights cannot rotate properly, and the AFS warning appears on the dashboard. What should I do?
A: The wiring connection clip may be tangled or obstructing movement.
Please position the wiring connection clip facing upward and manually check that the adaptive headlights can rotate smoothly without obstruction.

Warranty Information

If you have checked the troubleshooting steps and the issue still exists, please contact us directly: